| OLD | NEW |
| 1 // Copyright (c) 2012, the Dart project authors. Please see the AUTHORS file | 1 // Copyright (c) 2012, the Dart project authors. Please see the AUTHORS file |
| 2 // for details. All rights reserved. Use of this source code is governed by a | 2 // for details. All rights reserved. Use of this source code is governed by a |
| 3 // BSD-style license that can be found in the LICENSE file. | 3 // BSD-style license that can be found in the LICENSE file. |
| 4 | 4 |
| 5 #include "vm/code_patcher.h" | 5 #include "vm/code_patcher.h" |
| 6 #include "vm/cpu.h" | 6 #include "vm/cpu.h" |
| 7 #include "vm/instructions.h" | 7 #include "vm/instructions.h" |
| 8 #include "vm/object.h" | 8 #include "vm/object.h" |
| 9 #include "vm/virtual_memory.h" | 9 #include "vm/virtual_memory.h" |
| 10 | 10 |
| 11 namespace dart { | 11 namespace dart { |
| 12 | 12 |
| 13 DEFINE_FLAG(bool, write_protect_code, true, "Write protect jitted code"); | 13 DEFINE_FLAG(bool, write_protect_code, true, "Write protect jitted code"); |
| 14 | 14 |
| 15 | 15 |
| 16 WritableInstructionsScope::WritableInstructionsScope(uword address, | 16 WritableInstructionsScope::WritableInstructionsScope(uword address, |
| 17 intptr_t size) | 17 intptr_t size) |
| 18 : address_(address), size_(size) { | 18 : address_(address), size_(size) { |
| 19 if (FLAG_write_protect_code) { | 19 if (FLAG_write_protect_code) { |
| 20 bool status = VirtualMemory::Protect(reinterpret_cast<void*>(address), | 20 bool status = VirtualMemory::Protect(reinterpret_cast<void*>(address), size, |
| 21 size, | |
| 22 VirtualMemory::kReadWrite); | 21 VirtualMemory::kReadWrite); |
| 23 ASSERT(status); | 22 ASSERT(status); |
| 24 } | 23 } |
| 25 } | 24 } |
| 26 | 25 |
| 27 | 26 |
| 28 WritableInstructionsScope::~WritableInstructionsScope() { | 27 WritableInstructionsScope::~WritableInstructionsScope() { |
| 29 if (FLAG_write_protect_code) { | 28 if (FLAG_write_protect_code) { |
| 30 bool status = VirtualMemory::Protect(reinterpret_cast<void*>(address_), | 29 bool status = VirtualMemory::Protect(reinterpret_cast<void*>(address_), |
| 31 size_, | 30 size_, VirtualMemory::kReadExecute); |
| 32 VirtualMemory::kReadExecute); | |
| 33 ASSERT(status); | 31 ASSERT(status); |
| 34 } | 32 } |
| 35 } | 33 } |
| 36 | 34 |
| 37 } // namespace dart | 35 } // namespace dart |
| OLD | NEW |